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Finding the Fourth Proportional to 368,579.95, 508,656.70 and 207,445.43

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Solution

The fourth proportional to 368,579.95, 508,656.70 and 207,445.43 is: 286,283.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,579.95 : 508,656.70 = 207,445.43 : x
  2. Step 2: Convert to fraction form
    368,579.95/508,656.70 = 207,445.43/x
  3. Step 3: Cross multiply
    368,579.95x = 508,656.70 × 207,445.43
  4. Step 4: Simplify right side
    368,579.95x = 105,518,507,853.88
  5. Step 5: Solve for x
    x = 105,518,507,853.88/368,579.95
  6. Step 6: Final answer
    x = 286,283.91

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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.