Home / 282,729.04-390,166.92-155,417.68

Finding the Fourth Proportional to 282,729.04, 390,166.92 and 155,417.68

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Solution

The fourth proportional to 282,729.04, 390,166.92 and 155,417.68 is: 214,476.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,729.04 : 390,166.92 = 155,417.68 : x
  2. Step 2: Convert to fraction form
    282,729.04/390,166.92 = 155,417.68/x
  3. Step 3: Cross multiply
    282,729.04x = 390,166.92 × 155,417.68
  4. Step 4: Simplify right side
    282,729.04x = 60,638,837,519.15
  5. Step 5: Solve for x
    x = 60,638,837,519.15/282,729.04
  6. Step 6: Final answer
    x = 214,476.86

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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.