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Finding the Fourth Proportional to 219,909.84, 329,918.48 and 70,150.12

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Solution

The fourth proportional to 219,909.84, 329,918.48 and 70,150.12 is: 105,242.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,909.84 : 329,918.48 = 70,150.12 : x
  2. Step 2: Convert to fraction form
    219,909.84/329,918.48 = 70,150.12/x
  3. Step 3: Cross multiply
    219,909.84x = 329,918.48 × 70,150.12
  4. Step 4: Simplify right side
    219,909.84x = 23,143,820,962.22
  5. Step 5: Solve for x
    x = 23,143,820,962.22/219,909.84
  6. Step 6: Final answer
    x = 105,242.32

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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.