Home / 280,001.40-420,002.10-153,592.80

Finding the Fourth Proportional to 280,001.40, 420,002.10 and 153,592.80

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Solution

The fourth proportional to 280,001.40, 420,002.10 and 153,592.80 is: 230,389.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,001.40 : 420,002.10 = 153,592.80 : x
  2. Step 2: Convert to fraction form
    280,001.40/420,002.10 = 153,592.80/x
  3. Step 3: Cross multiply
    280,001.40x = 420,002.10 × 153,592.80
  4. Step 4: Simplify right side
    280,001.40x = 64,509,298,544.88
  5. Step 5: Solve for x
    x = 64,509,298,544.88/280,001.40
  6. Step 6: Final answer
    x = 230,389.20

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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.