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Finding the Fourth Proportional to 287,067.88, 430,645.56 and 146,779.12

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Solution

The fourth proportional to 287,067.88, 430,645.56 and 146,779.12 is: 220,191.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,067.88 : 430,645.56 = 146,779.12 : x
  2. Step 2: Convert to fraction form
    287,067.88/430,645.56 = 146,779.12/x
  3. Step 3: Cross multiply
    287,067.88x = 430,645.56 × 146,779.12
  4. Step 4: Simplify right side
    287,067.88x = 63,209,776,328.71
  5. Step 5: Solve for x
    x = 63,209,776,328.71/287,067.88
  6. Step 6: Final answer
    x = 220,191.04

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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.