Home / 283,409.79-391,123.18-156,085.35

Finding the Fourth Proportional to 283,409.79, 391,123.18 and 156,085.35

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Solution

The fourth proportional to 283,409.79, 391,123.18 and 156,085.35 is: 215,407.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,409.79 : 391,123.18 = 156,085.35 : x
  2. Step 2: Convert to fraction form
    283,409.79/391,123.18 = 156,085.35/x
  3. Step 3: Cross multiply
    283,409.79x = 391,123.18 × 156,085.35
  4. Step 4: Simplify right side
    283,409.79x = 61,048,598,443.41
  5. Step 5: Solve for x
    x = 61,048,598,443.41/283,409.79
  6. Step 6: Final answer
    x = 215,407.51

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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.