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Finding the Fourth Proportional to 437,500.77, 656,320 and 153,278.25

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Solution

The fourth proportional to 437,500.77, 656,320 and 153,278.25 is: 229,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,500.77 : 656,320 = 153,278.25 : x
  2. Step 2: Convert to fraction form
    437,500.77/656,320 = 153,278.25/x
  3. Step 3: Cross multiply
    437,500.77x = 656,320 × 153,278.25
  4. Step 4: Simplify right side
    437,500.77x = 100,599,581,040
  5. Step 5: Solve for x
    x = 100,599,581,040/437,500.77
  6. Step 6: Final answer
    x = 229,941.49

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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.