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Finding the Fourth Proportional to 402,686.88, 555,125.85 and 266,492.67

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Solution

The fourth proportional to 402,686.88, 555,125.85 and 266,492.67 is: 367,374.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,686.88 : 555,125.85 = 266,492.67 : x
  2. Step 2: Convert to fraction form
    402,686.88/555,125.85 = 266,492.67/x
  3. Step 3: Cross multiply
    402,686.88x = 555,125.85 × 266,492.67
  4. Step 4: Simplify right side
    402,686.88x = 147,936,969,952.52
  5. Step 5: Solve for x
    x = 147,936,969,952.52/402,686.88
  6. Step 6: Final answer
    x = 367,374.70

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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.