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Finding the Fourth Proportional to 370,726.40, 556,089.60 and 230,412.80

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Solution

The fourth proportional to 370,726.40, 556,089.60 and 230,412.80 is: 345,619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,726.40 : 556,089.60 = 230,412.80 : x
  2. Step 2: Convert to fraction form
    370,726.40/556,089.60 = 230,412.80/x
  3. Step 3: Cross multiply
    370,726.40x = 556,089.60 × 230,412.80
  4. Step 4: Simplify right side
    370,726.40x = 128,130,161,786.88
  5. Step 5: Solve for x
    x = 128,130,161,786.88/370,726.40
  6. Step 6: Final answer
    x = 345,619.20

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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.