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Finding the Fourth Proportional to 524,891.20, 787,336.80 and 209,574.40

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Solution

The fourth proportional to 524,891.20, 787,336.80 and 209,574.40 is: 314,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,891.20 : 787,336.80 = 209,574.40 : x
  2. Step 2: Convert to fraction form
    524,891.20/787,336.80 = 209,574.40/x
  3. Step 3: Cross multiply
    524,891.20x = 787,336.80 × 209,574.40
  4. Step 4: Simplify right side
    524,891.20x = 165,005,637,457.92
  5. Step 5: Solve for x
    x = 165,005,637,457.92/524,891.20
  6. Step 6: Final answer
    x = 314,361.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.