Home / 258,553,987.80-387,830,981.70-161,808,106.20

Finding the Fourth Proportional to 258,553,987.80, 387,830,981.70 and 161,808,106.20

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Solution

The fourth proportional to 258,553,987.80, 387,830,981.70 and 161,808,106.20 is: 242,712,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,553,987.80 : 387,830,981.70 = 161,808,106.20 : x
  2. Step 2: Convert to fraction form
    258,553,987.80/387,830,981.70 = 161,808,106.20/x
  3. Step 3: Cross multiply
    258,553,987.80x = 387,830,981.70 × 161,808,106.20
  4. Step 4: Simplify right side
    258,553,987.80x = 62,754,196,674,563,848
  5. Step 5: Solve for x
    x = 62,754,196,674,563,848/258,553,987.80
  6. Step 6: Final answer
    x = 242,712,159.30

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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.