Home / 283,139.03-390,740.08-154,085.83

Finding the Fourth Proportional to 283,139.03, 390,740.08 and 154,085.83

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Solution

The fourth proportional to 283,139.03, 390,740.08 and 154,085.83 is: 212,642.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,139.03 : 390,740.08 = 154,085.83 : x
  2. Step 2: Convert to fraction form
    283,139.03/390,740.08 = 154,085.83/x
  3. Step 3: Cross multiply
    283,139.03x = 390,740.08 × 154,085.83
  4. Step 4: Simplify right side
    283,139.03x = 60,207,508,770.64
  5. Step 5: Solve for x
    x = 60,207,508,770.64/283,139.03
  6. Step 6: Final answer
    x = 212,642.92

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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.