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Finding the Fourth Proportional to 287,910.30, 431,314.65 and 154,746.30

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Solution

The fourth proportional to 287,910.30, 431,314.65 and 154,746.30 is: 231,823.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,910.30 : 431,314.65 = 154,746.30 : x
  2. Step 2: Convert to fraction form
    287,910.30/431,314.65 = 154,746.30/x
  3. Step 3: Cross multiply
    287,910.30x = 431,314.65 × 154,746.30
  4. Step 4: Simplify right side
    287,910.30x = 66,744,346,223.30
  5. Step 5: Solve for x
    x = 66,744,346,223.30/287,910.30
  6. Step 6: Final answer
    x = 231,823.41

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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.