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Finding the Fourth Proportional to 326,670.74, 489,010.98 and 262,897.82

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Solution

The fourth proportional to 326,670.74, 489,010.98 and 262,897.82 is: 393,545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,670.74 : 489,010.98 = 262,897.82 : x
  2. Step 2: Convert to fraction form
    326,670.74/489,010.98 = 262,897.82/x
  3. Step 3: Cross multiply
    326,670.74x = 489,010.98 × 262,897.82
  4. Step 4: Simplify right side
    326,670.74x = 128,559,920,598.06
  5. Step 5: Solve for x
    x = 128,559,920,598.06/326,670.74
  6. Step 6: Final answer
    x = 393,545.87

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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.