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Finding the Fourth Proportional to 326,088.90, 489,133.35 and 115,748.10

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Solution

The fourth proportional to 326,088.90, 489,133.35 and 115,748.10 is: 173,622.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,088.90 : 489,133.35 = 115,748.10 : x
  2. Step 2: Convert to fraction form
    326,088.90/489,133.35 = 115,748.10/x
  3. Step 3: Cross multiply
    326,088.90x = 489,133.35 × 115,748.10
  4. Step 4: Simplify right side
    326,088.90x = 56,616,255,909.14
  5. Step 5: Solve for x
    x = 56,616,255,909.14/326,088.90
  6. Step 6: Final answer
    x = 173,622.15

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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.