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Finding the Fourth Proportional to 391,752.37, 540,730.38 and 230,700.84

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Solution

The fourth proportional to 391,752.37, 540,730.38 and 230,700.84 is: 318,433.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,752.37 : 540,730.38 = 230,700.84 : x
  2. Step 2: Convert to fraction form
    391,752.37/540,730.38 = 230,700.84/x
  3. Step 3: Cross multiply
    391,752.37x = 540,730.38 × 230,700.84
  4. Step 4: Simplify right side
    391,752.37x = 124,746,949,022.36
  5. Step 5: Solve for x
    x = 124,746,949,022.36/391,752.37
  6. Step 6: Final answer
    x = 318,433.17

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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.