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Finding the Fourth Proportional to 286,891.70, 430,337.55 and 220,666.10

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Solution

The fourth proportional to 286,891.70, 430,337.55 and 220,666.10 is: 330,999.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,891.70 : 430,337.55 = 220,666.10 : x
  2. Step 2: Convert to fraction form
    286,891.70/430,337.55 = 220,666.10/x
  3. Step 3: Cross multiply
    286,891.70x = 430,337.55 × 220,666.10
  4. Step 4: Simplify right side
    286,891.70x = 94,960,908,842.06
  5. Step 5: Solve for x
    x = 94,960,908,842.06/286,891.70
  6. Step 6: Final answer
    x = 330,999.15

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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.