Home / 309,709,987.17-427,411,068.11-168,574,388.85

Finding the Fourth Proportional to 309,709,987.17, 427,411,068.11 and 168,574,388.85

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Solution

The fourth proportional to 309,709,987.17, 427,411,068.11 and 168,574,388.85 is: 232,638,799.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,709,987.17 : 427,411,068.11 = 168,574,388.85 : x
  2. Step 2: Convert to fraction form
    309,709,987.17/427,411,068.11 = 168,574,388.85/x
  3. Step 3: Cross multiply
    309,709,987.17x = 427,411,068.11 × 168,574,388.85
  4. Step 4: Simplify right side
    309,709,987.17x = 72,050,559,593,526,104
  5. Step 5: Solve for x
    x = 72,050,559,593,526,104/309,709,987.17
  6. Step 6: Final answer
    x = 232,638,799.45

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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.