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Finding the Fourth Proportional to 303,772.70, 455,659.05 and 286,276.70

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Solution

The fourth proportional to 303,772.70, 455,659.05 and 286,276.70 is: 429,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,772.70 : 455,659.05 = 286,276.70 : x
  2. Step 2: Convert to fraction form
    303,772.70/455,659.05 = 286,276.70/x
  3. Step 3: Cross multiply
    303,772.70x = 455,659.05 × 286,276.70
  4. Step 4: Simplify right side
    303,772.70x = 130,444,569,159.14
  5. Step 5: Solve for x
    x = 130,444,569,159.14/303,772.70
  6. Step 6: Final answer
    x = 429,415.05

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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.