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Finding the Fourth Proportional to 292,424.70, 438,678.90 and 90,037.93

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Solution

The fourth proportional to 292,424.70, 438,678.90 and 90,037.93 is: 135,069.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,424.70 : 438,678.90 = 90,037.93 : x
  2. Step 2: Convert to fraction form
    292,424.70/438,678.90 = 90,037.93/x
  3. Step 3: Cross multiply
    292,424.70x = 438,678.90 × 90,037.93
  4. Step 4: Simplify right side
    292,424.70x = 39,497,739,640.49
  5. Step 5: Solve for x
    x = 39,497,739,640.49/292,424.70
  6. Step 6: Final answer
    x = 135,069.78

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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.