Home / 217,935.60-326,903.40-77,643.60

Finding the Fourth Proportional to 217,935.60, 326,903.40 and 77,643.60

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Solution

The fourth proportional to 217,935.60, 326,903.40 and 77,643.60 is: 116,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,935.60 : 326,903.40 = 77,643.60 : x
  2. Step 2: Convert to fraction form
    217,935.60/326,903.40 = 77,643.60/x
  3. Step 3: Cross multiply
    217,935.60x = 326,903.40 × 77,643.60
  4. Step 4: Simplify right side
    217,935.60x = 25,381,956,828.24
  5. Step 5: Solve for x
    x = 25,381,956,828.24/217,935.60
  6. Step 6: Final answer
    x = 116,465.40

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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.