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Finding the Fourth Proportional to 304,807.86, 420,840.32 and 190,260.95

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Solution

The fourth proportional to 304,807.86, 420,840.32 and 190,260.95 is: 262,688.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,807.86 : 420,840.32 = 190,260.95 : x
  2. Step 2: Convert to fraction form
    304,807.86/420,840.32 = 190,260.95/x
  3. Step 3: Cross multiply
    304,807.86x = 420,840.32 × 190,260.95
  4. Step 4: Simplify right side
    304,807.86x = 80,069,476,026.00
  5. Step 5: Solve for x
    x = 80,069,476,026.00/304,807.86
  6. Step 6: Final answer
    x = 262,688.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.