Home / 287,930.40-397,341.25-158,870.06

Finding the Fourth Proportional to 287,930.40, 397,341.25 and 158,870.06

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Solution

The fourth proportional to 287,930.40, 397,341.25 and 158,870.06 is: 219,239.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,930.40 : 397,341.25 = 158,870.06 : x
  2. Step 2: Convert to fraction form
    287,930.40/397,341.25 = 158,870.06/x
  3. Step 3: Cross multiply
    287,930.40x = 397,341.25 × 158,870.06
  4. Step 4: Simplify right side
    287,930.40x = 63,125,627,334.12
  5. Step 5: Solve for x
    x = 63,125,627,334.12/287,930.40
  6. Step 6: Final answer
    x = 219,239.19

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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.