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Finding the Fourth Proportional to 218,959.02, 302,006.70 and 142,335.18

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Solution

The fourth proportional to 218,959.02, 302,006.70 and 142,335.18 is: 196,320.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,959.02 : 302,006.70 = 142,335.18 : x
  2. Step 2: Convert to fraction form
    218,959.02/302,006.70 = 142,335.18/x
  3. Step 3: Cross multiply
    218,959.02x = 302,006.70 × 142,335.18
  4. Step 4: Simplify right side
    218,959.02x = 42,986,178,005.71
  5. Step 5: Solve for x
    x = 42,986,178,005.71/218,959.02
  6. Step 6: Final answer
    x = 196,320.65

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1.5x scale

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.