Home / 642,024.40-963,151.80-268,085.20

Finding the Fourth Proportional to 642,024.40, 963,151.80 and 268,085.20

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Solution

The fourth proportional to 642,024.40, 963,151.80 and 268,085.20 is: 402,175.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,024.40 : 963,151.80 = 268,085.20 : x
  2. Step 2: Convert to fraction form
    642,024.40/963,151.80 = 268,085.20/x
  3. Step 3: Cross multiply
    642,024.40x = 963,151.80 × 268,085.20
  4. Step 4: Simplify right side
    642,024.40x = 258,206,742,933.36
  5. Step 5: Solve for x
    x = 258,206,742,933.36/642,024.40
  6. Step 6: Final answer
    x = 402,175.90

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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.