Home / 429,946.12-645,178.38-149,660.20

Finding the Fourth Proportional to 429,946.12, 645,178.38 and 149,660.20

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Solution

The fourth proportional to 429,946.12, 645,178.38 and 149,660.20 is: 224,580.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,946.12 : 645,178.38 = 149,660.20 : x
  2. Step 2: Convert to fraction form
    429,946.12/645,178.38 = 149,660.20/x
  3. Step 3: Cross multiply
    429,946.12x = 645,178.38 × 149,660.20
  4. Step 4: Simplify right side
    429,946.12x = 96,557,525,386.48
  5. Step 5: Solve for x
    x = 96,557,525,386.48/429,946.12
  6. Step 6: Final answer
    x = 224,580.53

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1.5x scale

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.