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Finding the Fourth Proportional to 549,117.21, 757,775.90 and 307,401.77

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Solution

The fourth proportional to 549,117.21, 757,775.90 and 307,401.77 is: 424,211.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,117.21 : 757,775.90 = 307,401.77 : x
  2. Step 2: Convert to fraction form
    549,117.21/757,775.90 = 307,401.77/x
  3. Step 3: Cross multiply
    549,117.21x = 757,775.90 × 307,401.77
  4. Step 4: Simplify right side
    549,117.21x = 232,941,647,597.46
  5. Step 5: Solve for x
    x = 232,941,647,597.46/549,117.21
  6. Step 6: Final answer
    x = 424,211.16

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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.