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Finding the Fourth Proportional to 398,222.77, 549,547.18 and 219,374.77

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Solution

The fourth proportional to 398,222.77, 549,547.18 and 219,374.77 is: 302,737.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,222.77 : 549,547.18 = 219,374.77 : x
  2. Step 2: Convert to fraction form
    398,222.77/549,547.18 = 219,374.77/x
  3. Step 3: Cross multiply
    398,222.77x = 549,547.18 × 219,374.77
  4. Step 4: Simplify right side
    398,222.77x = 120,556,786,216.65
  5. Step 5: Solve for x
    x = 120,556,786,216.65/398,222.77
  6. Step 6: Final answer
    x = 302,737.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.