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Finding the Fourth Proportional to 303,686.90, 455,807.78 and 154,030.49

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Solution

The fourth proportional to 303,686.90, 455,807.78 and 154,030.49 is: 231,186.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,686.90 : 455,807.78 = 154,030.49 : x
  2. Step 2: Convert to fraction form
    303,686.90/455,807.78 = 154,030.49/x
  3. Step 3: Cross multiply
    303,686.90x = 455,807.78 × 154,030.49
  4. Step 4: Simplify right side
    303,686.90x = 70,208,297,223.81
  5. Step 5: Solve for x
    x = 70,208,297,223.81/303,686.90
  6. Step 6: Final answer
    x = 231,186.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.