Home / 282,677.19-390,116.16-161,856.33

Finding the Fourth Proportional to 282,677.19, 390,116.16 and 161,856.33

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Solution

The fourth proportional to 282,677.19, 390,116.16 and 161,856.33 is: 223,374.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,677.19 : 390,116.16 = 161,856.33 : x
  2. Step 2: Convert to fraction form
    282,677.19/390,116.16 = 161,856.33/x
  3. Step 3: Cross multiply
    282,677.19x = 390,116.16 × 161,856.33
  4. Step 4: Simplify right side
    282,677.19x = 63,142,769,931.29
  5. Step 5: Solve for x
    x = 63,142,769,931.29/282,677.19
  6. Step 6: Final answer
    x = 223,374.12

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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.