Home / 283,283.49-390,929.16-155,956.35

Finding the Fourth Proportional to 283,283.49, 390,929.16 and 155,956.35

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Solution

The fourth proportional to 283,283.49, 390,929.16 and 155,956.35 is: 215,218.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,283.49 : 390,929.16 = 155,956.35 : x
  2. Step 2: Convert to fraction form
    283,283.49/390,929.16 = 155,956.35/x
  3. Step 3: Cross multiply
    283,283.49x = 390,929.16 × 155,956.35
  4. Step 4: Simplify right side
    283,283.49x = 60,967,884,902.17
  5. Step 5: Solve for x
    x = 60,967,884,902.17/283,283.49
  6. Step 6: Final answer
    x = 215,218.63

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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.