Home / 430,101,643.60-645,152,465.40-142,887,307.60

Finding the Fourth Proportional to 430,101,643.60, 645,152,465.40 and 142,887,307.60

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Solution

The fourth proportional to 430,101,643.60, 645,152,465.40 and 142,887,307.60 is: 214,330,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,101,643.60 : 645,152,465.40 = 142,887,307.60 : x
  2. Step 2: Convert to fraction form
    430,101,643.60/645,152,465.40 = 142,887,307.60/x
  3. Step 3: Cross multiply
    430,101,643.60x = 645,152,465.40 × 142,887,307.60
  4. Step 4: Simplify right side
    430,101,643.60x = 92,184,098,772,508,144
  5. Step 5: Solve for x
    x = 92,184,098,772,508,144/430,101,643.60
  6. Step 6: Final answer
    x = 214,330,961.40

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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.