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Finding the Fourth Proportional to 553,812.19, 830,706.36 and 154,442.32

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Solution

The fourth proportional to 553,812.19, 830,706.36 and 154,442.32 is: 231,660.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,812.19 : 830,706.36 = 154,442.32 : x
  2. Step 2: Convert to fraction form
    553,812.19/830,706.36 = 154,442.32/x
  3. Step 3: Cross multiply
    553,812.19x = 830,706.36 × 154,442.32
  4. Step 4: Simplify right side
    553,812.19x = 128,296,217,477.16
  5. Step 5: Solve for x
    x = 128,296,217,477.16/553,812.19
  6. Step 6: Final answer
    x = 231,660.15

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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.