Home / 280,390.04-386,938.08-153,065.60

Finding the Fourth Proportional to 280,390.04, 386,938.08 and 153,065.60

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Solution

The fourth proportional to 280,390.04, 386,938.08 and 153,065.60 is: 211,230.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,390.04 : 386,938.08 = 153,065.60 : x
  2. Step 2: Convert to fraction form
    280,390.04/386,938.08 = 153,065.60/x
  3. Step 3: Cross multiply
    280,390.04x = 386,938.08 × 153,065.60
  4. Step 4: Simplify right side
    280,390.04x = 59,226,909,378.05
  5. Step 5: Solve for x
    x = 59,226,909,378.05/280,390.04
  6. Step 6: Final answer
    x = 211,230.43

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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.