Home / 442,870,916.20-664,495,331.10-212,721,533.80

Finding the Fourth Proportional to 442,870,916.20, 664,495,331.10 and 212,721,533.80

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Solution

The fourth proportional to 442,870,916.20, 664,495,331.10 and 212,721,533.80 is: 319,173,061.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,870,916.20 : 664,495,331.10 = 212,721,533.80 : x
  2. Step 2: Convert to fraction form
    442,870,916.20/664,495,331.10 = 212,721,533.80/x
  3. Step 3: Cross multiply
    442,870,916.20x = 664,495,331.10 × 212,721,533.80
  4. Step 4: Simplify right side
    442,870,916.20x = 141,352,466,034,530,848
  5. Step 5: Solve for x
    x = 141,352,466,034,530,848/442,870,916.20
  6. Step 6: Final answer
    x = 319,173,061.19

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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.