Home / 283,435.72-391,159.02-156,111.28

Finding the Fourth Proportional to 283,435.72, 391,159.02 and 156,111.28

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Solution

The fourth proportional to 283,435.72, 391,159.02 and 156,111.28 is: 215,443.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,435.72 : 391,159.02 = 156,111.28 : x
  2. Step 2: Convert to fraction form
    283,435.72/391,159.02 = 156,111.28/x
  3. Step 3: Cross multiply
    283,435.72x = 391,159.02 × 156,111.28
  4. Step 4: Simplify right side
    283,435.72x = 61,064,335,295.75
  5. Step 5: Solve for x
    x = 61,064,335,295.75/283,435.72
  6. Step 6: Final answer
    x = 215,443.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.