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Finding the Fourth Proportional to 368,636.25, 508,630.55 and 207,459.21

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Solution

The fourth proportional to 368,636.25, 508,630.55 and 207,459.21 is: 286,244.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,636.25 : 508,630.55 = 207,459.21 : x
  2. Step 2: Convert to fraction form
    368,636.25/508,630.55 = 207,459.21/x
  3. Step 3: Cross multiply
    368,636.25x = 508,630.55 × 207,459.21
  4. Step 4: Simplify right side
    368,636.25x = 105,520,091,047.57
  5. Step 5: Solve for x
    x = 105,520,091,047.57/368,636.25
  6. Step 6: Final answer
    x = 286,244.48

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1.5x scale

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.