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Finding the Fourth Proportional to 211,510.62, 291,879.51 and 136,058.94

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Solution

The fourth proportional to 211,510.62, 291,879.51 and 136,058.94 is: 187,758.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,510.62 : 291,879.51 = 136,058.94 : x
  2. Step 2: Convert to fraction form
    211,510.62/291,879.51 = 136,058.94/x
  3. Step 3: Cross multiply
    211,510.62x = 291,879.51 × 136,058.94
  4. Step 4: Simplify right side
    211,510.62x = 39,712,816,738.32
  5. Step 5: Solve for x
    x = 39,712,816,738.32/211,510.62
  6. Step 6: Final answer
    x = 187,758.03

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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.