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Finding the Fourth Proportional to 368,456.07, 508,468.40 and 207,311.31

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Solution

The fourth proportional to 368,456.07, 508,468.40 and 207,311.31 is: 286,089.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,456.07 : 508,468.40 = 207,311.31 : x
  2. Step 2: Convert to fraction form
    368,456.07/508,468.40 = 207,311.31/x
  3. Step 3: Cross multiply
    368,456.07x = 508,468.40 × 207,311.31
  4. Step 4: Simplify right side
    368,456.07x = 105,411,249,061.05
  5. Step 5: Solve for x
    x = 105,411,249,061.05/368,456.07
  6. Step 6: Final answer
    x = 286,089.06

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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.