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Finding the Fourth Proportional to 368,735.95, 553,293.47 and 319,134.79

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Solution

The fourth proportional to 368,735.95, 553,293.47 and 319,134.79 is: 478,866.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,735.95 : 553,293.47 = 319,134.79 : x
  2. Step 2: Convert to fraction form
    368,735.95/553,293.47 = 319,134.79/x
  3. Step 3: Cross multiply
    368,735.95x = 553,293.47 × 319,134.79
  4. Step 4: Simplify right side
    368,735.95x = 176,575,195,356.82
  5. Step 5: Solve for x
    x = 176,575,195,356.82/368,735.95
  6. Step 6: Final answer
    x = 478,866.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.