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Finding the Fourth Proportional to 217,384.61, 299,852.74 and 157,043.91

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Solution

The fourth proportional to 217,384.61, 299,852.74 and 157,043.91 is: 216,620.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,384.61 : 299,852.74 = 157,043.91 : x
  2. Step 2: Convert to fraction form
    217,384.61/299,852.74 = 157,043.91/x
  3. Step 3: Cross multiply
    217,384.61x = 299,852.74 × 157,043.91
  4. Step 4: Simplify right side
    217,384.61x = 47,090,047,151.19
  5. Step 5: Solve for x
    x = 47,090,047,151.19/217,384.61
  6. Step 6: Final answer
    x = 216,620.89

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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.