Home / 282,713.67-390,139.83-155,389.23

Finding the Fourth Proportional to 282,713.67, 390,139.83 and 155,389.23

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Solution

The fourth proportional to 282,713.67, 390,139.83 and 155,389.23 is: 214,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,713.67 : 390,139.83 = 155,389.23 : x
  2. Step 2: Convert to fraction form
    282,713.67/390,139.83 = 155,389.23/x
  3. Step 3: Cross multiply
    282,713.67x = 390,139.83 × 155,389.23
  4. Step 4: Simplify right side
    282,713.67x = 60,623,527,776.03
  5. Step 5: Solve for x
    x = 60,623,527,776.03/282,713.67
  6. Step 6: Final answer
    x = 214,434.37

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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.