Home / 287,637.20-397,124.04-185,708.40

Finding the Fourth Proportional to 287,637.20, 397,124.04 and 185,708.40

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Solution

The fourth proportional to 287,637.20, 397,124.04 and 185,708.40 is: 256,396.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,637.20 : 397,124.04 = 185,708.40 : x
  2. Step 2: Convert to fraction form
    287,637.20/397,124.04 = 185,708.40/x
  3. Step 3: Cross multiply
    287,637.20x = 397,124.04 × 185,708.40
  4. Step 4: Simplify right side
    287,637.20x = 73,749,270,069.94
  5. Step 5: Solve for x
    x = 73,749,270,069.94/287,637.20
  6. Step 6: Final answer
    x = 256,396.84

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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.