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Finding the Fourth Proportional to 508,215.16, 701,332.05 and 278,767.72

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Solution

The fourth proportional to 508,215.16, 701,332.05 and 278,767.72 is: 384,696.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,215.16 : 701,332.05 = 278,767.72 : x
  2. Step 2: Convert to fraction form
    508,215.16/701,332.05 = 278,767.72/x
  3. Step 3: Cross multiply
    508,215.16x = 701,332.05 × 278,767.72
  4. Step 4: Simplify right side
    508,215.16x = 195,508,736,541.43
  5. Step 5: Solve for x
    x = 195,508,736,541.43/508,215.16
  6. Step 6: Final answer
    x = 384,696.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.