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Finding the Fourth Proportional to 397,364.66, 549,807.21 and 346,483.40

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Solution

The fourth proportional to 397,364.66, 549,807.21 and 346,483.40 is: 479,406.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,364.66 : 549,807.21 = 346,483.40 : x
  2. Step 2: Convert to fraction form
    397,364.66/549,807.21 = 346,483.40/x
  3. Step 3: Cross multiply
    397,364.66x = 549,807.21 × 346,483.40
  4. Step 4: Simplify right side
    397,364.66x = 190,499,069,732.90
  5. Step 5: Solve for x
    x = 190,499,069,732.90/397,364.66
  6. Step 6: Final answer
    x = 479,406.18

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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.