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Finding the Fourth Proportional to 288,620.71, 398,038.73 and 181,200.76

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Solution

The fourth proportional to 288,620.71, 398,038.73 and 181,200.76 is: 249,895.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,620.71 : 398,038.73 = 181,200.76 : x
  2. Step 2: Convert to fraction form
    288,620.71/398,038.73 = 181,200.76/x
  3. Step 3: Cross multiply
    288,620.71x = 398,038.73 × 181,200.76
  4. Step 4: Simplify right side
    288,620.71x = 72,124,919,479.43
  5. Step 5: Solve for x
    x = 72,124,919,479.43/288,620.71
  6. Step 6: Final answer
    x = 249,895.16

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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.