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Finding the Fourth Proportional to 368,688.40, 508,784.32 and 207,542.94

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Solution

The fourth proportional to 368,688.40, 508,784.32 and 207,542.94 is: 286,406.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,688.40 : 508,784.32 = 207,542.94 : x
  2. Step 2: Convert to fraction form
    368,688.40/508,784.32 = 207,542.94/x
  3. Step 3: Cross multiply
    368,688.40x = 508,784.32 × 207,542.94
  4. Step 4: Simplify right side
    368,688.40x = 105,594,593,598.70
  5. Step 5: Solve for x
    x = 105,594,593,598.70/368,688.40
  6. Step 6: Final answer
    x = 286,406.06

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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.