Home / 282,717.67-390,145.35-155,393.23

Finding the Fourth Proportional to 282,717.67, 390,145.35 and 155,393.23

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Solution

The fourth proportional to 282,717.67, 390,145.35 and 155,393.23 is: 214,439.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,717.67 : 390,145.35 = 155,393.23 : x
  2. Step 2: Convert to fraction form
    282,717.67/390,145.35 = 155,393.23/x
  3. Step 3: Cross multiply
    282,717.67x = 390,145.35 × 155,393.23
  4. Step 4: Simplify right side
    282,717.67x = 60,625,946,105.98
  5. Step 5: Solve for x
    x = 60,625,946,105.98/282,717.67
  6. Step 6: Final answer
    x = 214,439.89

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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.