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Finding the Fourth Proportional to 369,785.55, 510,328.13 and 208,581.78

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Solution

The fourth proportional to 369,785.55, 510,328.13 and 208,581.78 is: 287,856.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,785.55 : 510,328.13 = 208,581.78 : x
  2. Step 2: Convert to fraction form
    369,785.55/510,328.13 = 208,581.78/x
  3. Step 3: Cross multiply
    369,785.55x = 510,328.13 × 208,581.78
  4. Step 4: Simplify right side
    369,785.55x = 106,445,149,739.47
  5. Step 5: Solve for x
    x = 106,445,149,739.47/369,785.55
  6. Step 6: Final answer
    x = 287,856.43

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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.