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Finding the Fourth Proportional to 354,484.59, 489,230.73 and 201,545.84

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Solution

The fourth proportional to 354,484.59, 489,230.73 and 201,545.84 is: 278,157.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,484.59 : 489,230.73 = 201,545.84 : x
  2. Step 2: Convert to fraction form
    354,484.59/489,230.73 = 201,545.84/x
  3. Step 3: Cross multiply
    354,484.59x = 489,230.73 × 201,545.84
  4. Step 4: Simplify right side
    354,484.59x = 98,602,415,985.51
  5. Step 5: Solve for x
    x = 98,602,415,985.51/354,484.59
  6. Step 6: Final answer
    x = 278,157.13

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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.