Home / 280,724.02-387,400.16-153,399.62

Finding the Fourth Proportional to 280,724.02, 387,400.16 and 153,399.62

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Solution

The fourth proportional to 280,724.02, 387,400.16 and 153,399.62 is: 211,692.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,724.02 : 387,400.16 = 153,399.62 : x
  2. Step 2: Convert to fraction form
    280,724.02/387,400.16 = 153,399.62/x
  3. Step 3: Cross multiply
    280,724.02x = 387,400.16 × 153,399.62
  4. Step 4: Simplify right side
    280,724.02x = 59,427,038,683.94
  5. Step 5: Solve for x
    x = 59,427,038,683.94/280,724.02
  6. Step 6: Final answer
    x = 211,692.04

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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.