Home / 315,472,678.02-435,353,646.60-172,421,330.58

Finding the Fourth Proportional to 315,472,678.02, 435,353,646.60 and 172,421,330.58

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Solution

The fourth proportional to 315,472,678.02, 435,353,646.60 and 172,421,330.58 is: 237,942,174.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,472,678.02 : 435,353,646.60 = 172,421,330.58 : x
  2. Step 2: Convert to fraction form
    315,472,678.02/435,353,646.60 = 172,421,330.58/x
  3. Step 3: Cross multiply
    315,472,678.02x = 435,353,646.60 × 172,421,330.58
  4. Step 4: Simplify right side
    315,472,678.02x = 75,064,255,019,627,104
  5. Step 5: Solve for x
    x = 75,064,255,019,627,104/315,472,678.02
  6. Step 6: Final answer
    x = 237,942,174.55

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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.