Home / 287,773.10-397,126.90-160,448.72

Finding the Fourth Proportional to 287,773.10, 397,126.90 and 160,448.72

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Solution

The fourth proportional to 287,773.10, 397,126.90 and 160,448.72 is: 221,419.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,773.10 : 397,126.90 = 160,448.72 : x
  2. Step 2: Convert to fraction form
    287,773.10/397,126.90 = 160,448.72/x
  3. Step 3: Cross multiply
    287,773.10x = 397,126.90 × 160,448.72
  4. Step 4: Simplify right side
    287,773.10x = 63,718,502,782.57
  5. Step 5: Solve for x
    x = 63,718,502,782.57/287,773.10
  6. Step 6: Final answer
    x = 221,419.25

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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.