Home / 282,880.02-390,384.45-155,565.30

Finding the Fourth Proportional to 282,880.02, 390,384.45 and 155,565.30

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Solution

The fourth proportional to 282,880.02, 390,384.45 and 155,565.30 is: 214,685.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,880.02 : 390,384.45 = 155,565.30 : x
  2. Step 2: Convert to fraction form
    282,880.02/390,384.45 = 155,565.30/x
  3. Step 3: Cross multiply
    282,880.02x = 390,384.45 × 155,565.30
  4. Step 4: Simplify right side
    282,880.02x = 60,730,274,079.59
  5. Step 5: Solve for x
    x = 60,730,274,079.59/282,880.02
  6. Step 6: Final answer
    x = 214,685.63

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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.