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Finding the Fourth Proportional to 291,602.94, 402,430.59 and 219,856.38

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Solution

The fourth proportional to 291,602.94, 402,430.59 and 219,856.38 is: 303,415.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,602.94 : 402,430.59 = 219,856.38 : x
  2. Step 2: Convert to fraction form
    291,602.94/402,430.59 = 219,856.38/x
  3. Step 3: Cross multiply
    291,602.94x = 402,430.59 × 219,856.38
  4. Step 4: Simplify right side
    291,602.94x = 88,476,932,718.66
  5. Step 5: Solve for x
    x = 88,476,932,718.66/291,602.94
  6. Step 6: Final answer
    x = 303,415.78

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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.