Home / 280,666.16-387,318.84-153,341.72

Finding the Fourth Proportional to 280,666.16, 387,318.84 and 153,341.72

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Solution

The fourth proportional to 280,666.16, 387,318.84 and 153,341.72 is: 211,611.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,666.16 : 387,318.84 = 153,341.72 : x
  2. Step 2: Convert to fraction form
    280,666.16/387,318.84 = 153,341.72/x
  3. Step 3: Cross multiply
    280,666.16x = 387,318.84 × 153,341.72
  4. Step 4: Simplify right side
    280,666.16x = 59,392,137,114.00
  5. Step 5: Solve for x
    x = 59,392,137,114.00/280,666.16
  6. Step 6: Final answer
    x = 211,611.32

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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.