Home / 211,448.89-291,812.79-139,703.14

Finding the Fourth Proportional to 211,448.89, 291,812.79 and 139,703.14

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Solution

The fourth proportional to 211,448.89, 291,812.79 and 139,703.14 is: 192,799.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,448.89 : 291,812.79 = 139,703.14 : x
  2. Step 2: Convert to fraction form
    211,448.89/291,812.79 = 139,703.14/x
  3. Step 3: Cross multiply
    211,448.89x = 291,812.79 × 139,703.14
  4. Step 4: Simplify right side
    211,448.89x = 40,767,163,055.16
  5. Step 5: Solve for x
    x = 40,767,163,055.16/211,448.89
  6. Step 6: Final answer
    x = 192,799.13

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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.