Home / 287,418,912.99-431,164,224-112,519,354.86

Finding the Fourth Proportional to 287,418,912.99, 431,164,224 and 112,519,354.86

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Solution

The fourth proportional to 287,418,912.99, 431,164,224 and 112,519,354.86 is: 168,793,068.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,418,912.99 : 431,164,224 = 112,519,354.86 : x
  2. Step 2: Convert to fraction form
    287,418,912.99/431,164,224 = 112,519,354.86/x
  3. Step 3: Cross multiply
    287,418,912.99x = 431,164,224 × 112,519,354.86
  4. Step 4: Simplify right side
    287,418,912.99x = 48,514,320,323,192,528
  5. Step 5: Solve for x
    x = 48,514,320,323,192,528/287,418,912.99
  6. Step 6: Final answer
    x = 168,793,068.69

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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.