Home / 420,444.68-630,292.05-154,143.14

Finding the Fourth Proportional to 420,444.68, 630,292.05 and 154,143.14

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Solution

The fourth proportional to 420,444.68, 630,292.05 and 154,143.14 is: 231,077.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,444.68 : 630,292.05 = 154,143.14 : x
  2. Step 2: Convert to fraction form
    420,444.68/630,292.05 = 154,143.14/x
  3. Step 3: Cross multiply
    420,444.68x = 630,292.05 × 154,143.14
  4. Step 4: Simplify right side
    420,444.68x = 97,155,192,552.58
  5. Step 5: Solve for x
    x = 97,155,192,552.58/420,444.68
  6. Step 6: Final answer
    x = 231,077.23

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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.