Home / 287,550,747.90-431,326,121.85-172,476,056.70

Finding the Fourth Proportional to 287,550,747.90, 431,326,121.85 and 172,476,056.70

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Solution

The fourth proportional to 287,550,747.90, 431,326,121.85 and 172,476,056.70 is: 258,714,085.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,550,747.90 : 431,326,121.85 = 172,476,056.70 : x
  2. Step 2: Convert to fraction form
    287,550,747.90/431,326,121.85 = 172,476,056.70/x
  3. Step 3: Cross multiply
    287,550,747.90x = 431,326,121.85 × 172,476,056.70
  4. Step 4: Simplify right side
    287,550,747.90x = 74,393,428,648,391,712
  5. Step 5: Solve for x
    x = 74,393,428,648,391,712/287,550,747.90
  6. Step 6: Final answer
    x = 258,714,085.05

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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.