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Finding the Fourth Proportional to 368,374.91, 508,386.91 and 207,220.35

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Solution

The fourth proportional to 368,374.91, 508,386.91 and 207,220.35 is: 285,980.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,374.91 : 508,386.91 = 207,220.35 : x
  2. Step 2: Convert to fraction form
    368,374.91/508,386.91 = 207,220.35/x
  3. Step 3: Cross multiply
    368,374.91x = 508,386.91 × 207,220.35
  4. Step 4: Simplify right side
    368,374.91x = 105,348,112,907.57
  5. Step 5: Solve for x
    x = 105,348,112,907.57/368,374.91
  6. Step 6: Final answer
    x = 285,980.69

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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.