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Finding the Fourth Proportional to 465,437.61, 698,142.51 and 128,498.85

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Solution

The fourth proportional to 465,437.61, 698,142.51 and 128,498.85 is: 192,744.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,437.61 : 698,142.51 = 128,498.85 : x
  2. Step 2: Convert to fraction form
    465,437.61/698,142.51 = 128,498.85/x
  3. Step 3: Cross multiply
    465,437.61x = 698,142.51 × 128,498.85
  4. Step 4: Simplify right side
    465,437.61x = 89,710,509,671.11
  5. Step 5: Solve for x
    x = 89,710,509,671.11/465,437.61
  6. Step 6: Final answer
    x = 192,744.44

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1.5x scale

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.