Home / 487,985.12-732,036.72-172,377.44

Finding the Fourth Proportional to 487,985.12, 732,036.72 and 172,377.44

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Solution

The fourth proportional to 487,985.12, 732,036.72 and 172,377.44 is: 258,587.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,985.12 : 732,036.72 = 172,377.44 : x
  2. Step 2: Convert to fraction form
    487,985.12/732,036.72 = 172,377.44/x
  3. Step 3: Cross multiply
    487,985.12x = 732,036.72 × 172,377.44
  4. Step 4: Simplify right side
    487,985.12x = 126,186,615,779.60
  5. Step 5: Solve for x
    x = 126,186,615,779.60/487,985.12
  6. Step 6: Final answer
    x = 258,587.02

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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.