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Finding the Fourth Proportional to 288,045.90, 432,068.85 and 259,505.55

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Solution

The fourth proportional to 288,045.90, 432,068.85 and 259,505.55 is: 389,258.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,045.90 : 432,068.85 = 259,505.55 : x
  2. Step 2: Convert to fraction form
    288,045.90/432,068.85 = 259,505.55/x
  3. Step 3: Cross multiply
    288,045.90x = 432,068.85 × 259,505.55
  4. Step 4: Simplify right side
    288,045.90x = 112,124,264,557.12
  5. Step 5: Solve for x
    x = 112,124,264,557.12/288,045.90
  6. Step 6: Final answer
    x = 389,258.33

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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.