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Finding the Fourth Proportional to 310,689.60, 462,313.20 and 309,639.84

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Solution

The fourth proportional to 310,689.60, 462,313.20 and 309,639.84 is: 460,751.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,689.60 : 462,313.20 = 309,639.84 : x
  2. Step 2: Convert to fraction form
    310,689.60/462,313.20 = 309,639.84/x
  3. Step 3: Cross multiply
    310,689.60x = 462,313.20 × 309,639.84
  4. Step 4: Simplify right side
    310,689.60x = 143,150,585,277.89
  5. Step 5: Solve for x
    x = 143,150,585,277.89/310,689.60
  6. Step 6: Final answer
    x = 460,751.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.