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Finding the Fourth Proportional to 398,005.66, 549,475.59 and 262,433.98

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Solution

The fourth proportional to 398,005.66, 549,475.59 and 262,433.98 is: 362,309.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,005.66 : 549,475.59 = 262,433.98 : x
  2. Step 2: Convert to fraction form
    398,005.66/549,475.59 = 262,433.98/x
  3. Step 3: Cross multiply
    398,005.66x = 549,475.59 × 262,433.98
  4. Step 4: Simplify right side
    398,005.66x = 144,201,065,996.55
  5. Step 5: Solve for x
    x = 144,201,065,996.55/398,005.66
  6. Step 6: Final answer
    x = 362,309.08

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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.