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Finding the Fourth Proportional to 305,460.60, 457,802.10 and 272,023.80

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Solution

The fourth proportional to 305,460.60, 457,802.10 and 272,023.80 is: 407,689.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,460.60 : 457,802.10 = 272,023.80 : x
  2. Step 2: Convert to fraction form
    305,460.60/457,802.10 = 272,023.80/x
  3. Step 3: Cross multiply
    305,460.60x = 457,802.10 × 272,023.80
  4. Step 4: Simplify right side
    305,460.60x = 124,533,066,889.98
  5. Step 5: Solve for x
    x = 124,533,066,889.98/305,460.60
  6. Step 6: Final answer
    x = 407,689.46

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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.