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Finding the Fourth Proportional to 388,862.40, 536,629.99 and 210,014.40

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Solution

The fourth proportional to 388,862.40, 536,629.99 and 210,014.40 is: 289,819.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,862.40 : 536,629.99 = 210,014.40 : x
  2. Step 2: Convert to fraction form
    388,862.40/536,629.99 = 210,014.40/x
  3. Step 3: Cross multiply
    388,862.40x = 536,629.99 × 210,014.40
  4. Step 4: Simplify right side
    388,862.40x = 112,700,025,371.86
  5. Step 5: Solve for x
    x = 112,700,025,371.86/388,862.40
  6. Step 6: Final answer
    x = 289,819.81

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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.