Home / 638,547.20-957,950.40-217,865.60

Finding the Fourth Proportional to 638,547.20, 957,950.40 and 217,865.60

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Solution

The fourth proportional to 638,547.20, 957,950.40 and 217,865.60 is: 326,842.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,547.20 : 957,950.40 = 217,865.60 : x
  2. Step 2: Convert to fraction form
    638,547.20/957,950.40 = 217,865.60/x
  3. Step 3: Cross multiply
    638,547.20x = 957,950.40 × 217,865.60
  4. Step 4: Simplify right side
    638,547.20x = 208,704,438,666.24
  5. Step 5: Solve for x
    x = 208,704,438,666.24/638,547.20
  6. Step 6: Final answer
    x = 326,842.62

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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.