Home / 293,652,992.40-439,975,603.80-139,968,128.40

Finding the Fourth Proportional to 293,652,992.40, 439,975,603.80 and 139,968,128.40

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Solution

The fourth proportional to 293,652,992.40, 439,975,603.80 and 139,968,128.40 is: 209,712,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,652,992.40 : 439,975,603.80 = 139,968,128.40 : x
  2. Step 2: Convert to fraction form
    293,652,992.40/439,975,603.80 = 139,968,128.40/x
  3. Step 3: Cross multiply
    293,652,992.40x = 439,975,603.80 × 139,968,128.40
  4. Step 4: Simplify right side
    293,652,992.40x = 61,582,561,805,545,936
  5. Step 5: Solve for x
    x = 61,582,561,805,545,936/293,652,992.40
  6. Step 6: Final answer
    x = 209,712,018.60

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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.