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Finding the Fourth Proportional to 348,370.20, 521,534.70 and 260,015.40

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Solution

The fourth proportional to 348,370.20, 521,534.70 and 260,015.40 is: 389,261.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,370.20 : 521,534.70 = 260,015.40 : x
  2. Step 2: Convert to fraction form
    348,370.20/521,534.70 = 260,015.40/x
  3. Step 3: Cross multiply
    348,370.20x = 521,534.70 × 260,015.40
  4. Step 4: Simplify right side
    348,370.20x = 135,607,053,634.38
  5. Step 5: Solve for x
    x = 135,607,053,634.38/348,370.20
  6. Step 6: Final answer
    x = 389,261.35

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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.