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Finding the Fourth Proportional to 252,753,643.80, 379,130,465.70 and 206,837,141.40

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Solution

The fourth proportional to 252,753,643.80, 379,130,465.70 and 206,837,141.40 is: 310,255,712.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,753,643.80 : 379,130,465.70 = 206,837,141.40 : x
  2. Step 2: Convert to fraction form
    252,753,643.80/379,130,465.70 = 206,837,141.40/x
  3. Step 3: Cross multiply
    252,753,643.80x = 379,130,465.70 × 206,837,141.40
  4. Step 4: Simplify right side
    252,753,643.80x = 78,418,261,743,038,752
  5. Step 5: Solve for x
    x = 78,418,261,743,038,752/252,753,643.80
  6. Step 6: Final answer
    x = 310,255,712.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.