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Finding the Fourth Proportional to 499,018.04, 688,636.86 and 272,658.68

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Solution

The fourth proportional to 499,018.04, 688,636.86 and 272,658.68 is: 376,264.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,018.04 : 688,636.86 = 272,658.68 : x
  2. Step 2: Convert to fraction form
    499,018.04/688,636.86 = 272,658.68/x
  3. Step 3: Cross multiply
    499,018.04x = 688,636.86 × 272,658.68
  4. Step 4: Simplify right side
    499,018.04x = 187,762,817,246.95
  5. Step 5: Solve for x
    x = 187,762,817,246.95/499,018.04
  6. Step 6: Final answer
    x = 376,264.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.