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Finding the Fourth Proportional to 368,458.06, 508,430.90 and 207,368.50

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Solution

The fourth proportional to 368,458.06, 508,430.90 and 207,368.50 is: 286,145.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,458.06 : 508,430.90 = 207,368.50 : x
  2. Step 2: Convert to fraction form
    368,458.06/508,430.90 = 207,368.50/x
  3. Step 3: Cross multiply
    368,458.06x = 508,430.90 × 207,368.50
  4. Step 4: Simplify right side
    368,458.06x = 105,432,553,086.65
  5. Step 5: Solve for x
    x = 105,432,553,086.65/368,458.06
  6. Step 6: Final answer
    x = 286,145.33

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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.