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Finding the Fourth Proportional to 296,928.70, 445,393.05 and 260,064.70

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Solution

The fourth proportional to 296,928.70, 445,393.05 and 260,064.70 is: 390,097.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,928.70 : 445,393.05 = 260,064.70 : x
  2. Step 2: Convert to fraction form
    296,928.70/445,393.05 = 260,064.70/x
  3. Step 3: Cross multiply
    296,928.70x = 445,393.05 × 260,064.70
  4. Step 4: Simplify right side
    296,928.70x = 115,831,009,930.34
  5. Step 5: Solve for x
    x = 115,831,009,930.34/296,928.70
  6. Step 6: Final answer
    x = 390,097.05

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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.