Home / 430,686.20-646,088.40-146,300.42

Finding the Fourth Proportional to 430,686.20, 646,088.40 and 146,300.42

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Solution

The fourth proportional to 430,686.20, 646,088.40 and 146,300.42 is: 219,470.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,686.20 : 646,088.40 = 146,300.42 : x
  2. Step 2: Convert to fraction form
    430,686.20/646,088.40 = 146,300.42/x
  3. Step 3: Cross multiply
    430,686.20x = 646,088.40 × 146,300.42
  4. Step 4: Simplify right side
    430,686.20x = 94,523,001,046.69
  5. Step 5: Solve for x
    x = 94,523,001,046.69/430,686.20
  6. Step 6: Final answer
    x = 219,470.70

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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.