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Finding the Fourth Proportional to 219,491.72, 302,899.74 and 118,889.72

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Solution

The fourth proportional to 219,491.72, 302,899.74 and 118,889.72 is: 164,068.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,491.72 : 302,899.74 = 118,889.72 : x
  2. Step 2: Convert to fraction form
    219,491.72/302,899.74 = 118,889.72/x
  3. Step 3: Cross multiply
    219,491.72x = 302,899.74 × 118,889.72
  4. Step 4: Simplify right side
    219,491.72x = 36,011,665,276.67
  5. Step 5: Solve for x
    x = 36,011,665,276.67/219,491.72
  6. Step 6: Final answer
    x = 164,068.45

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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.