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Finding the Fourth Proportional to 553,569.66, 830,355.30 and 154,211.58

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Solution

The fourth proportional to 553,569.66, 830,355.30 and 154,211.58 is: 231,317.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,569.66 : 830,355.30 = 154,211.58 : x
  2. Step 2: Convert to fraction form
    553,569.66/830,355.30 = 154,211.58/x
  3. Step 3: Cross multiply
    553,569.66x = 830,355.30 × 154,211.58
  4. Step 4: Simplify right side
    553,569.66x = 128,050,402,774.37
  5. Step 5: Solve for x
    x = 128,050,402,774.37/553,569.66
  6. Step 6: Final answer
    x = 231,317.60

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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.