Home / 438,317.87-656,947.85-213,341.18

Finding the Fourth Proportional to 438,317.87, 656,947.85 and 213,341.18

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Solution

The fourth proportional to 438,317.87, 656,947.85 and 213,341.18 is: 319,754.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,317.87 : 656,947.85 = 213,341.18 : x
  2. Step 2: Convert to fraction form
    438,317.87/656,947.85 = 213,341.18/x
  3. Step 3: Cross multiply
    438,317.87x = 656,947.85 × 213,341.18
  4. Step 4: Simplify right side
    438,317.87x = 140,154,025,166.02
  5. Step 5: Solve for x
    x = 140,154,025,166.02/438,317.87
  6. Step 6: Final answer
    x = 319,754.31

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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.