Home / 282,762.12-390,217.05-155,437.68

Finding the Fourth Proportional to 282,762.12, 390,217.05 and 155,437.68

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Solution

The fourth proportional to 282,762.12, 390,217.05 and 155,437.68 is: 214,506.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,762.12 : 390,217.05 = 155,437.68 : x
  2. Step 2: Convert to fraction form
    282,762.12/390,217.05 = 155,437.68/x
  3. Step 3: Cross multiply
    282,762.12x = 390,217.05 × 155,437.68
  4. Step 4: Simplify right side
    282,762.12x = 60,654,432,948.44
  5. Step 5: Solve for x
    x = 60,654,432,948.44/282,762.12
  6. Step 6: Final answer
    x = 214,506.93

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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.