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Finding the Fourth Proportional to 311,547.88, 467,332.32 and 86,913.80

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Solution

The fourth proportional to 311,547.88, 467,332.32 and 86,913.80 is: 130,373.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,547.88 : 467,332.32 = 86,913.80 : x
  2. Step 2: Convert to fraction form
    311,547.88/467,332.32 = 86,913.80/x
  3. Step 3: Cross multiply
    311,547.88x = 467,332.32 × 86,913.80
  4. Step 4: Simplify right side
    311,547.88x = 40,617,627,794.02
  5. Step 5: Solve for x
    x = 40,617,627,794.02/311,547.88
  6. Step 6: Final answer
    x = 130,373.63

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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.