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Finding the Fourth Proportional to 390,570.28, 585,851.16 and 296,378.92

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Solution

The fourth proportional to 390,570.28, 585,851.16 and 296,378.92 is: 444,565.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,570.28 : 585,851.16 = 296,378.92 : x
  2. Step 2: Convert to fraction form
    390,570.28/585,851.16 = 296,378.92/x
  3. Step 3: Cross multiply
    390,570.28x = 585,851.16 × 296,378.92
  4. Step 4: Simplify right side
    390,570.28x = 173,633,935,925.28
  5. Step 5: Solve for x
    x = 173,633,935,925.28/390,570.28
  6. Step 6: Final answer
    x = 444,565.15

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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.