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Finding the Fourth Proportional to 421,236,980.07, 631,941,647.81 and 144,852,300.03

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Solution

The fourth proportional to 421,236,980.07, 631,941,647.81 and 144,852,300.03 is: 217,308,084.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,236,980.07 : 631,941,647.81 = 144,852,300.03 : x
  2. Step 2: Convert to fraction form
    421,236,980.07/631,941,647.81 = 144,852,300.03/x
  3. Step 3: Cross multiply
    421,236,980.07x = 631,941,647.81 × 144,852,300.03
  4. Step 4: Simplify right side
    421,236,980.07x = 91,538,201,169,302,448
  5. Step 5: Solve for x
    x = 91,538,201,169,302,448/421,236,980.07
  6. Step 6: Final answer
    x = 217,308,084.29

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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.