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Finding the Fourth Proportional to 449,324.93, 619,330.16 and 318,547.19

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Solution

The fourth proportional to 449,324.93, 619,330.16 and 318,547.19 is: 439,071.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,324.93 : 619,330.16 = 318,547.19 : x
  2. Step 2: Convert to fraction form
    449,324.93/619,330.16 = 318,547.19/x
  3. Step 3: Cross multiply
    449,324.93x = 619,330.16 × 318,547.19
  4. Step 4: Simplify right side
    449,324.93x = 197,285,877,460.86
  5. Step 5: Solve for x
    x = 197,285,877,460.86/449,324.93
  6. Step 6: Final answer
    x = 439,071.74

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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.