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Finding the Fourth Proportional to 305,200.90, 457,801.35 and 260,100.10

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Solution

The fourth proportional to 305,200.90, 457,801.35 and 260,100.10 is: 390,150.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,200.90 : 457,801.35 = 260,100.10 : x
  2. Step 2: Convert to fraction form
    305,200.90/457,801.35 = 260,100.10/x
  3. Step 3: Cross multiply
    305,200.90x = 457,801.35 × 260,100.10
  4. Step 4: Simplify right side
    305,200.90x = 119,074,176,915.14
  5. Step 5: Solve for x
    x = 119,074,176,915.14/305,200.90
  6. Step 6: Final answer
    x = 390,150.15

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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.