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Finding the Fourth Proportional to 303,602.40, 455,403.60 and 213,060.60

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Solution

The fourth proportional to 303,602.40, 455,403.60 and 213,060.60 is: 319,590.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,602.40 : 455,403.60 = 213,060.60 : x
  2. Step 2: Convert to fraction form
    303,602.40/455,403.60 = 213,060.60/x
  3. Step 3: Cross multiply
    303,602.40x = 455,403.60 × 213,060.60
  4. Step 4: Simplify right side
    303,602.40x = 97,028,564,258.16
  5. Step 5: Solve for x
    x = 97,028,564,258.16/303,602.40
  6. Step 6: Final answer
    x = 319,590.90

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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.