Home / 285,438.32-428,423.20-145,301.84

Finding the Fourth Proportional to 285,438.32, 428,423.20 and 145,301.84

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Solution

The fourth proportional to 285,438.32, 428,423.20 and 145,301.84 is: 218,088.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,438.32 : 428,423.20 = 145,301.84 : x
  2. Step 2: Convert to fraction form
    285,438.32/428,423.20 = 145,301.84/x
  3. Step 3: Cross multiply
    285,438.32x = 428,423.20 × 145,301.84
  4. Step 4: Simplify right side
    285,438.32x = 62,250,679,258.69
  5. Step 5: Solve for x
    x = 62,250,679,258.69/285,438.32
  6. Step 6: Final answer
    x = 218,088.02

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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.