Home / 280,608.02-387,234.21-153,280.34

Finding the Fourth Proportional to 280,608.02, 387,234.21 and 153,280.34

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Solution

The fourth proportional to 280,608.02, 387,234.21 and 153,280.34 is: 211,524.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,608.02 : 387,234.21 = 153,280.34 : x
  2. Step 2: Convert to fraction form
    280,608.02/387,234.21 = 153,280.34/x
  3. Step 3: Cross multiply
    280,608.02x = 387,234.21 × 153,280.34
  4. Step 4: Simplify right side
    280,608.02x = 59,355,391,368.43
  5. Step 5: Solve for x
    x = 59,355,391,368.43/280,608.02
  6. Step 6: Final answer
    x = 211,524.22

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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.