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Finding the Fourth Proportional to 304,925.80, 420,802.02 and 170,790.76

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Solution

The fourth proportional to 304,925.80, 420,802.02 and 170,790.76 is: 235,693.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,925.80 : 420,802.02 = 170,790.76 : x
  2. Step 2: Convert to fraction form
    304,925.80/420,802.02 = 170,790.76/x
  3. Step 3: Cross multiply
    304,925.80x = 420,802.02 × 170,790.76
  4. Step 4: Simplify right side
    304,925.80x = 71,869,096,805.34
  5. Step 5: Solve for x
    x = 71,869,096,805.34/304,925.80
  6. Step 6: Final answer
    x = 235,693.72

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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.