Home / 287,461.03-431,287.51-127,514.90

Finding the Fourth Proportional to 287,461.03, 431,287.51 and 127,514.90

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Solution

The fourth proportional to 287,461.03, 431,287.51 and 127,514.90 is: 191,314.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,461.03 : 431,287.51 = 127,514.90 : x
  2. Step 2: Convert to fraction form
    287,461.03/431,287.51 = 127,514.90/x
  3. Step 3: Cross multiply
    287,461.03x = 431,287.51 × 127,514.90
  4. Step 4: Simplify right side
    287,461.03x = 54,995,583,708.90
  5. Step 5: Solve for x
    x = 54,995,583,708.90/287,461.03
  6. Step 6: Final answer
    x = 191,314.92

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1.5x scale

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.