Home / 282,813.96-390,282.30-155,489.16

Finding the Fourth Proportional to 282,813.96, 390,282.30 and 155,489.16

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Solution

The fourth proportional to 282,813.96, 390,282.30 and 155,489.16 is: 214,574.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,813.96 : 390,282.30 = 155,489.16 : x
  2. Step 2: Convert to fraction form
    282,813.96/390,282.30 = 155,489.16/x
  3. Step 3: Cross multiply
    282,813.96x = 390,282.30 × 155,489.16
  4. Step 4: Simplify right side
    282,813.96x = 60,684,666,989.87
  5. Step 5: Solve for x
    x = 60,684,666,989.87/282,813.96
  6. Step 6: Final answer
    x = 214,574.51

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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.