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Finding the Fourth Proportional to 283,250.58, 390,885.78 and 154,189.56

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Solution

The fourth proportional to 283,250.58, 390,885.78 and 154,189.56 is: 212,781.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,250.58 : 390,885.78 = 154,189.56 : x
  2. Step 2: Convert to fraction form
    283,250.58/390,885.78 = 154,189.56/x
  3. Step 3: Cross multiply
    283,250.58x = 390,885.78 × 154,189.56
  4. Step 4: Simplify right side
    283,250.58x = 60,270,506,428.46
  5. Step 5: Solve for x
    x = 60,270,506,428.46/283,250.58
  6. Step 6: Final answer
    x = 212,781.58

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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.