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Finding the Fourth Proportional to 243,975.79, 336,646.41 and 153,267.51

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Solution

The fourth proportional to 243,975.79, 336,646.41 and 153,267.51 is: 211,483.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,975.79 : 336,646.41 = 153,267.51 : x
  2. Step 2: Convert to fraction form
    243,975.79/336,646.41 = 153,267.51/x
  3. Step 3: Cross multiply
    243,975.79x = 336,646.41 × 153,267.51
  4. Step 4: Simplify right side
    243,975.79x = 51,596,957,011.14
  5. Step 5: Solve for x
    x = 51,596,957,011.14/243,975.79
  6. Step 6: Final answer
    x = 211,483.92

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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.