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Finding the Fourth Proportional to 553,812.54, 830,718.66 and 133,088.40

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Solution

The fourth proportional to 553,812.54, 830,718.66 and 133,088.40 is: 199,632.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,812.54 : 830,718.66 = 133,088.40 : x
  2. Step 2: Convert to fraction form
    553,812.54/830,718.66 = 133,088.40/x
  3. Step 3: Cross multiply
    553,812.54x = 830,718.66 × 133,088.40
  4. Step 4: Simplify right side
    553,812.54x = 110,559,017,309.54
  5. Step 5: Solve for x
    x = 110,559,017,309.54/553,812.54
  6. Step 6: Final answer
    x = 199,632.56

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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.