Home / 287,307,135.60-430,960,703.40-172,515,879.60

Finding the Fourth Proportional to 287,307,135.60, 430,960,703.40 and 172,515,879.60

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Solution

The fourth proportional to 287,307,135.60, 430,960,703.40 and 172,515,879.60 is: 258,773,819.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,307,135.60 : 430,960,703.40 = 172,515,879.60 : x
  2. Step 2: Convert to fraction form
    287,307,135.60/430,960,703.40 = 172,515,879.60/x
  3. Step 3: Cross multiply
    287,307,135.60x = 430,960,703.40 × 172,515,879.60
  4. Step 4: Simplify right side
    287,307,135.60x = 74,347,564,820,085,696
  5. Step 5: Solve for x
    x = 74,347,564,820,085,696/287,307,135.60
  6. Step 6: Final answer
    x = 258,773,819.40

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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.