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Finding the Fourth Proportional to 283,748.32, 391,570.04 and 154,686.80

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Solution

The fourth proportional to 283,748.32, 391,570.04 and 154,686.80 is: 213,466.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,748.32 : 391,570.04 = 154,686.80 : x
  2. Step 2: Convert to fraction form
    283,748.32/391,570.04 = 154,686.80/x
  3. Step 3: Cross multiply
    283,748.32x = 391,570.04 × 154,686.80
  4. Step 4: Simplify right side
    283,748.32x = 60,570,716,463.47
  5. Step 5: Solve for x
    x = 60,570,716,463.47/283,748.32
  6. Step 6: Final answer
    x = 213,466.34

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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.