Home / 222,492,828.14-307,017,980.16-128,437,276.28

Finding the Fourth Proportional to 222,492,828.14, 307,017,980.16 and 128,437,276.28

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Solution

The fourth proportional to 222,492,828.14, 307,017,980.16 and 128,437,276.28 is: 177,230,670.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,492,828.14 : 307,017,980.16 = 128,437,276.28 : x
  2. Step 2: Convert to fraction form
    222,492,828.14/307,017,980.16 = 128,437,276.28/x
  3. Step 3: Cross multiply
    222,492,828.14x = 307,017,980.16 × 128,437,276.28
  4. Step 4: Simplify right side
    222,492,828.14x = 39,432,553,140,737,480
  5. Step 5: Solve for x
    x = 39,432,553,140,737,480/222,492,828.14
  6. Step 6: Final answer
    x = 177,230,670.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.