Home / 292,039,128.40-438,030,223.80-76,628,376.40

Finding the Fourth Proportional to 292,039,128.40, 438,030,223.80 and 76,628,376.40

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Solution

The fourth proportional to 292,039,128.40, 438,030,223.80 and 76,628,376.40 is: 114,935,094.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,039,128.40 : 438,030,223.80 = 76,628,376.40 : x
  2. Step 2: Convert to fraction form
    292,039,128.40/438,030,223.80 = 76,628,376.40/x
  3. Step 3: Cross multiply
    292,039,128.40x = 438,030,223.80 × 76,628,376.40
  4. Step 4: Simplify right side
    292,039,128.40x = 33,565,544,863,922,640
  5. Step 5: Solve for x
    x = 33,565,544,863,922,640/292,039,128.40
  6. Step 6: Final answer
    x = 114,935,094.65

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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.