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Finding the Fourth Proportional to 311,875.40, 467,813.10 and 154,411.40

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Solution

The fourth proportional to 311,875.40, 467,813.10 and 154,411.40 is: 231,617.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,875.40 : 467,813.10 = 154,411.40 : x
  2. Step 2: Convert to fraction form
    311,875.40/467,813.10 = 154,411.40/x
  3. Step 3: Cross multiply
    311,875.40x = 467,813.10 × 154,411.40
  4. Step 4: Simplify right side
    311,875.40x = 72,235,675,709.34
  5. Step 5: Solve for x
    x = 72,235,675,709.34/311,875.40
  6. Step 6: Final answer
    x = 231,617.10

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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.