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Finding the Fourth Proportional to 368,419.07, 508,410.72 and 207,272.40

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Solution

The fourth proportional to 368,419.07, 508,410.72 and 207,272.40 is: 286,031.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,419.07 : 508,410.72 = 207,272.40 : x
  2. Step 2: Convert to fraction form
    368,419.07/508,410.72 = 207,272.40/x
  3. Step 3: Cross multiply
    368,419.07x = 508,410.72 × 207,272.40
  4. Step 4: Simplify right side
    368,419.07x = 105,379,510,120.13
  5. Step 5: Solve for x
    x = 105,379,510,120.13/368,419.07
  6. Step 6: Final answer
    x = 286,031.64

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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.