Home / 282,695.18-390,114.81-155,368.04

Finding the Fourth Proportional to 282,695.18, 390,114.81 and 155,368.04

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Solution

The fourth proportional to 282,695.18, 390,114.81 and 155,368.04 is: 214,405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,695.18 : 390,114.81 = 155,368.04 : x
  2. Step 2: Convert to fraction form
    282,695.18/390,114.81 = 155,368.04/x
  3. Step 3: Cross multiply
    282,695.18x = 390,114.81 × 155,368.04
  4. Step 4: Simplify right side
    282,695.18x = 60,611,372,036.73
  5. Step 5: Solve for x
    x = 60,611,372,036.73/282,695.18
  6. Step 6: Final answer
    x = 214,405.40

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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.