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Finding the Fourth Proportional to 640,888.36, 961,334.64 and 241,421.92

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Solution

The fourth proportional to 640,888.36, 961,334.64 and 241,421.92 is: 362,133.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,888.36 : 961,334.64 = 241,421.92 : x
  2. Step 2: Convert to fraction form
    640,888.36/961,334.64 = 241,421.92/x
  3. Step 3: Cross multiply
    640,888.36x = 961,334.64 × 241,421.92
  4. Step 4: Simplify right side
    640,888.36x = 232,087,254,551.31
  5. Step 5: Solve for x
    x = 232,087,254,551.31/640,888.36
  6. Step 6: Final answer
    x = 362,133.67

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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.