Home / 290,017,802.98-400,233,075.12-157,867,420.36

Finding the Fourth Proportional to 290,017,802.98, 400,233,075.12 and 157,867,420.36

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Solution

The fourth proportional to 290,017,802.98, 400,233,075.12 and 157,867,420.36 is: 217,861,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,017,802.98 : 400,233,075.12 = 157,867,420.36 : x
  2. Step 2: Convert to fraction form
    290,017,802.98/400,233,075.12 = 157,867,420.36/x
  3. Step 3: Cross multiply
    290,017,802.98x = 400,233,075.12 × 157,867,420.36
  4. Step 4: Simplify right side
    290,017,802.98x = 63,183,763,111,944,504
  5. Step 5: Solve for x
    x = 63,183,763,111,944,504/290,017,802.98
  6. Step 6: Final answer
    x = 217,861,670.78

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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.