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Finding the Fourth Proportional to 553,501.20, 830,273.63 and 154,176.87

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Solution

The fourth proportional to 553,501.20, 830,273.63 and 154,176.87 is: 231,271.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,501.20 : 830,273.63 = 154,176.87 : x
  2. Step 2: Convert to fraction form
    553,501.20/830,273.63 = 154,176.87/x
  3. Step 3: Cross multiply
    553,501.20x = 830,273.63 × 154,176.87
  4. Step 4: Simplify right side
    553,501.20x = 128,008,988,746.05
  5. Step 5: Solve for x
    x = 128,008,988,746.05/553,501.20
  6. Step 6: Final answer
    x = 231,271.38

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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.