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Finding the Fourth Proportional to 311,328.80, 466,988.40 and 211,240.16

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Solution

The fourth proportional to 311,328.80, 466,988.40 and 211,240.16 is: 316,856.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,328.80 : 466,988.40 = 211,240.16 : x
  2. Step 2: Convert to fraction form
    311,328.80/466,988.40 = 211,240.16/x
  3. Step 3: Cross multiply
    311,328.80x = 466,988.40 × 211,240.16
  4. Step 4: Simplify right side
    311,328.80x = 98,646,704,334.14
  5. Step 5: Solve for x
    x = 98,646,704,334.14/311,328.80
  6. Step 6: Final answer
    x = 316,856.98

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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.