Home / 213,359,968.80-320,039,953.20-209,958,746.40

Finding the Fourth Proportional to 213,359,968.80, 320,039,953.20 and 209,958,746.40

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Solution

The fourth proportional to 213,359,968.80, 320,039,953.20 and 209,958,746.40 is: 314,938,119.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,359,968.80 : 320,039,953.20 = 209,958,746.40 : x
  2. Step 2: Convert to fraction form
    213,359,968.80/320,039,953.20 = 209,958,746.40/x
  3. Step 3: Cross multiply
    213,359,968.80x = 320,039,953.20 × 209,958,746.40
  4. Step 4: Simplify right side
    213,359,968.80x = 67,195,187,371,786,664
  5. Step 5: Solve for x
    x = 67,195,187,371,786,664/213,359,968.80
  6. Step 6: Final answer
    x = 314,938,119.60

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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.