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Finding the Fourth Proportional to 369,987.60, 554,918.80 and 103,686.83

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Solution

The fourth proportional to 369,987.60, 554,918.80 and 103,686.83 is: 155,512.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,987.60 : 554,918.80 = 103,686.83 : x
  2. Step 2: Convert to fraction form
    369,987.60/554,918.80 = 103,686.83/x
  3. Step 3: Cross multiply
    369,987.60x = 554,918.80 × 103,686.83
  4. Step 4: Simplify right side
    369,987.60x = 57,537,771,279.40
  5. Step 5: Solve for x
    x = 57,537,771,279.40/369,987.60
  6. Step 6: Final answer
    x = 155,512.70

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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.