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Finding the Fourth Proportional to 397,365.15, 549,807.90 and 346,483.90

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Solution

The fourth proportional to 397,365.15, 549,807.90 and 346,483.90 is: 479,406.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,365.15 : 549,807.90 = 346,483.90 : x
  2. Step 2: Convert to fraction form
    397,365.15/549,807.90 = 346,483.90/x
  3. Step 3: Cross multiply
    397,365.15x = 549,807.90 × 346,483.90
  4. Step 4: Simplify right side
    397,365.15x = 190,499,585,442.81
  5. Step 5: Solve for x
    x = 190,499,585,442.81/397,365.15
  6. Step 6: Final answer
    x = 479,406.88

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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.