Home / 282,627.20-390,017.60-155,302.72

Finding the Fourth Proportional to 282,627.20, 390,017.60 and 155,302.72

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Solution

The fourth proportional to 282,627.20, 390,017.60 and 155,302.72 is: 214,313.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,627.20 : 390,017.60 = 155,302.72 : x
  2. Step 2: Convert to fraction form
    282,627.20/390,017.60 = 155,302.72/x
  3. Step 3: Cross multiply
    282,627.20x = 390,017.60 × 155,302.72
  4. Step 4: Simplify right side
    282,627.20x = 60,570,794,127.87
  5. Step 5: Solve for x
    x = 60,570,794,127.87/282,627.20
  6. Step 6: Final answer
    x = 214,313.39

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1.5x scale

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.