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Finding the Fourth Proportional to 553,802.51, 830,703.68 and 133,078.39

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Solution

The fourth proportional to 553,802.51, 830,703.68 and 133,078.39 is: 199,617.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,802.51 : 830,703.68 = 133,078.39 : x
  2. Step 2: Convert to fraction form
    553,802.51/830,703.68 = 133,078.39/x
  3. Step 3: Cross multiply
    553,802.51x = 830,703.68 × 133,078.39
  4. Step 4: Simplify right side
    553,802.51x = 110,548,708,301.48
  5. Step 5: Solve for x
    x = 110,548,708,301.48/553,802.51
  6. Step 6: Final answer
    x = 199,617.56

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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.