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Finding the Fourth Proportional to 458,510.90, 687,733.32 and 121,543.88

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Solution

The fourth proportional to 458,510.90, 687,733.32 and 121,543.88 is: 182,307.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,510.90 : 687,733.32 = 121,543.88 : x
  2. Step 2: Convert to fraction form
    458,510.90/687,733.32 = 121,543.88/x
  3. Step 3: Cross multiply
    458,510.90x = 687,733.32 × 121,543.88
  4. Step 4: Simplify right side
    458,510.90x = 83,589,776,118.08
  5. Step 5: Solve for x
    x = 83,589,776,118.08/458,510.90
  6. Step 6: Final answer
    x = 182,307.06

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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.