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Finding the Fourth Proportional to 553,881.34, 830,748.02 and 154,488.70

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Solution

The fourth proportional to 553,881.34, 830,748.02 and 154,488.70 is: 231,712.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,881.34 : 830,748.02 = 154,488.70 : x
  2. Step 2: Convert to fraction form
    553,881.34/830,748.02 = 154,488.70/x
  3. Step 3: Cross multiply
    553,881.34x = 830,748.02 × 154,488.70
  4. Step 4: Simplify right side
    553,881.34x = 128,341,181,637.37
  5. Step 5: Solve for x
    x = 128,341,181,637.37/553,881.34
  6. Step 6: Final answer
    x = 231,712.41

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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.