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Finding the Fourth Proportional to 315,093.30, 472,639.95 and 315,093.30

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Solution

The fourth proportional to 315,093.30, 472,639.95 and 315,093.30 is: 472,639.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,093.30 : 472,639.95 = 315,093.30 : x
  2. Step 2: Convert to fraction form
    315,093.30/472,639.95 = 315,093.30/x
  3. Step 3: Cross multiply
    315,093.30x = 472,639.95 × 315,093.30
  4. Step 4: Simplify right side
    315,093.30x = 148,925,681,557.34
  5. Step 5: Solve for x
    x = 148,925,681,557.34/315,093.30
  6. Step 6: Final answer
    x = 472,639.95

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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.