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Finding the Fourth Proportional to 306,045.40, 459,068.10 and 216,815.80

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Solution

The fourth proportional to 306,045.40, 459,068.10 and 216,815.80 is: 325,223.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,045.40 : 459,068.10 = 216,815.80 : x
  2. Step 2: Convert to fraction form
    306,045.40/459,068.10 = 216,815.80/x
  3. Step 3: Cross multiply
    306,045.40x = 459,068.10 × 216,815.80
  4. Step 4: Simplify right side
    306,045.40x = 99,533,217,355.98
  5. Step 5: Solve for x
    x = 99,533,217,355.98/306,045.40
  6. Step 6: Final answer
    x = 325,223.70

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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.