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Finding the Fourth Proportional to 295,519.60, 442,987.80 and 145,637.20

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Solution

The fourth proportional to 295,519.60, 442,987.80 and 145,637.20 is: 218,312.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,519.60 : 442,987.80 = 145,637.20 : x
  2. Step 2: Convert to fraction form
    295,519.60/442,987.80 = 145,637.20/x
  3. Step 3: Cross multiply
    295,519.60x = 442,987.80 × 145,637.20
  4. Step 4: Simplify right side
    295,519.60x = 64,515,502,826.16
  5. Step 5: Solve for x
    x = 64,515,502,826.16/295,519.60
  6. Step 6: Final answer
    x = 218,312.09

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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.