Home / 338,048.20-507,088.68-278,775.64

Finding the Fourth Proportional to 338,048.20, 507,088.68 and 278,775.64

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Solution

The fourth proportional to 338,048.20, 507,088.68 and 278,775.64 is: 418,176.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,048.20 : 507,088.68 = 278,775.64 : x
  2. Step 2: Convert to fraction form
    338,048.20/507,088.68 = 278,775.64/x
  3. Step 3: Cross multiply
    338,048.20x = 507,088.68 × 278,775.64
  4. Step 4: Simplify right side
    338,048.20x = 141,363,971,303.76
  5. Step 5: Solve for x
    x = 141,363,971,303.76/338,048.20
  6. Step 6: Final answer
    x = 418,176.97

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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.