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Finding the Fourth Proportional to 326,461.60, 489,663.60 and 89,783.20

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Solution

The fourth proportional to 326,461.60, 489,663.60 and 89,783.20 is: 134,666.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,461.60 : 489,663.60 = 89,783.20 : x
  2. Step 2: Convert to fraction form
    326,461.60/489,663.60 = 89,783.20/x
  3. Step 3: Cross multiply
    326,461.60x = 489,663.60 × 89,783.20
  4. Step 4: Simplify right side
    326,461.60x = 43,963,564,931.52
  5. Step 5: Solve for x
    x = 43,963,564,931.52/326,461.60
  6. Step 6: Final answer
    x = 134,666.88

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1.5x scale

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.