Home / 287,488,215.20-431,232,322.80-218,613,461.60

Finding the Fourth Proportional to 287,488,215.20, 431,232,322.80 and 218,613,461.60

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Solution

The fourth proportional to 287,488,215.20, 431,232,322.80 and 218,613,461.60 is: 327,920,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,488,215.20 : 431,232,322.80 = 218,613,461.60 : x
  2. Step 2: Convert to fraction form
    287,488,215.20/431,232,322.80 = 218,613,461.60/x
  3. Step 3: Cross multiply
    287,488,215.20x = 431,232,322.80 × 218,613,461.60
  4. Step 4: Simplify right side
    287,488,215.20x = 94,273,190,841,116,608
  5. Step 5: Solve for x
    x = 94,273,190,841,116,608/287,488,215.20
  6. Step 6: Final answer
    x = 327,920,192.40

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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.