Home / 282,987.04-390,515.70-155,659.90

Finding the Fourth Proportional to 282,987.04, 390,515.70 and 155,659.90

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Solution

The fourth proportional to 282,987.04, 390,515.70 and 155,659.90 is: 214,807.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,987.04 : 390,515.70 = 155,659.90 : x
  2. Step 2: Convert to fraction form
    282,987.04/390,515.70 = 155,659.90/x
  3. Step 3: Cross multiply
    282,987.04x = 390,515.70 × 155,659.90
  4. Step 4: Simplify right side
    282,987.04x = 60,787,634,810.43
  5. Step 5: Solve for x
    x = 60,787,634,810.43/282,987.04
  6. Step 6: Final answer
    x = 214,807.13

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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.