Home / 287,539,008.40-431,308,512.60-236,520,672.40

Finding the Fourth Proportional to 287,539,008.40, 431,308,512.60 and 236,520,672.40

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Solution

The fourth proportional to 287,539,008.40, 431,308,512.60 and 236,520,672.40 is: 354,781,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,539,008.40 : 431,308,512.60 = 236,520,672.40 : x
  2. Step 2: Convert to fraction form
    287,539,008.40/431,308,512.60 = 236,520,672.40/x
  3. Step 3: Cross multiply
    287,539,008.40x = 431,308,512.60 × 236,520,672.40
  4. Step 4: Simplify right side
    287,539,008.40x = 102,013,379,411,995,888
  5. Step 5: Solve for x
    x = 102,013,379,411,995,888/287,539,008.40
  6. Step 6: Final answer
    x = 354,781,008.60

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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.