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Finding the Fourth Proportional to 304,497.60, 456,746.40 and 138,285.60

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Solution

The fourth proportional to 304,497.60, 456,746.40 and 138,285.60 is: 207,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,497.60 : 456,746.40 = 138,285.60 : x
  2. Step 2: Convert to fraction form
    304,497.60/456,746.40 = 138,285.60/x
  3. Step 3: Cross multiply
    304,497.60x = 456,746.40 × 138,285.60
  4. Step 4: Simplify right side
    304,497.60x = 63,161,449,971.84
  5. Step 5: Solve for x
    x = 63,161,449,971.84/304,497.60
  6. Step 6: Final answer
    x = 207,428.40

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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.