Home / 280,428.89-386,973.86-153,104.18

Finding the Fourth Proportional to 280,428.89, 386,973.86 and 153,104.18

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Solution

The fourth proportional to 280,428.89, 386,973.86 and 153,104.18 is: 211,273.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,428.89 : 386,973.86 = 153,104.18 : x
  2. Step 2: Convert to fraction form
    280,428.89/386,973.86 = 153,104.18/x
  3. Step 3: Cross multiply
    280,428.89x = 386,973.86 × 153,104.18
  4. Step 4: Simplify right side
    280,428.89x = 59,247,312,816.34
  5. Step 5: Solve for x
    x = 59,247,312,816.34/280,428.89
  6. Step 6: Final answer
    x = 211,273.93

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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.