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Finding the Fourth Proportional to 283,017, 390,244.58 and 218,339.04

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Solution

The fourth proportional to 283,017, 390,244.58 and 218,339.04 is: 301,061.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,017 : 390,244.58 = 218,339.04 : x
  2. Step 2: Convert to fraction form
    283,017/390,244.58 = 218,339.04/x
  3. Step 3: Cross multiply
    283,017x = 390,244.58 × 218,339.04
  4. Step 4: Simplify right side
    283,017x = 85,205,626,962.40
  5. Step 5: Solve for x
    x = 85,205,626,962.40/283,017
  6. Step 6: Final answer
    x = 301,061.87

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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.