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Finding the Fourth Proportional to 199,624.60, 299,552.10 and 74,978.20

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Solution

The fourth proportional to 199,624.60, 299,552.10 and 74,978.20 is: 112,510.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,624.60 : 299,552.10 = 74,978.20 : x
  2. Step 2: Convert to fraction form
    199,624.60/299,552.10 = 74,978.20/x
  3. Step 3: Cross multiply
    199,624.60x = 299,552.10 × 74,978.20
  4. Step 4: Simplify right side
    199,624.60x = 22,459,877,264.22
  5. Step 5: Solve for x
    x = 22,459,877,264.22/199,624.60
  6. Step 6: Final answer
    x = 112,510.57

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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.