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Finding the Fourth Proportional to 368,675.90, 508,767.10 and 207,530.45

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Solution

The fourth proportional to 368,675.90, 508,767.10 and 207,530.45 is: 286,388.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,675.90 : 508,767.10 = 207,530.45 : x
  2. Step 2: Convert to fraction form
    368,675.90/508,767.10 = 207,530.45/x
  3. Step 3: Cross multiply
    368,675.90x = 508,767.10 × 207,530.45
  4. Step 4: Simplify right side
    368,675.90x = 105,584,662,145.53
  5. Step 5: Solve for x
    x = 105,584,662,145.53/368,675.90
  6. Step 6: Final answer
    x = 286,388.84

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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.