Home / 438,363.40-657,545.10-142,875.40

Finding the Fourth Proportional to 438,363.40, 657,545.10 and 142,875.40

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Solution

The fourth proportional to 438,363.40, 657,545.10 and 142,875.40 is: 214,313.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,363.40 : 657,545.10 = 142,875.40 : x
  2. Step 2: Convert to fraction form
    438,363.40/657,545.10 = 142,875.40/x
  3. Step 3: Cross multiply
    438,363.40x = 657,545.10 × 142,875.40
  4. Step 4: Simplify right side
    438,363.40x = 93,947,019,180.54
  5. Step 5: Solve for x
    x = 93,947,019,180.54/438,363.40
  6. Step 6: Final answer
    x = 214,313.10

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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.