Home / 438,929.60-658,000.20-172,871.60

Finding the Fourth Proportional to 438,929.60, 658,000.20 and 172,871.60

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Solution

The fourth proportional to 438,929.60, 658,000.20 and 172,871.60 is: 259,152.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,929.60 : 658,000.20 = 172,871.60 : x
  2. Step 2: Convert to fraction form
    438,929.60/658,000.20 = 172,871.60/x
  3. Step 3: Cross multiply
    438,929.60x = 658,000.20 × 172,871.60
  4. Step 4: Simplify right side
    438,929.60x = 113,749,547,374.32
  5. Step 5: Solve for x
    x = 113,749,547,374.32/438,929.60
  6. Step 6: Final answer
    x = 259,152.15

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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.