Home / 256,406,310.09-353,841,020.60-138,931,547.67

Finding the Fourth Proportional to 256,406,310.09, 353,841,020.60 and 138,931,547.67

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Solution

The fourth proportional to 256,406,310.09, 353,841,020.60 and 138,931,547.67 is: 191,725,705.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,406,310.09 : 353,841,020.60 = 138,931,547.67 : x
  2. Step 2: Convert to fraction form
    256,406,310.09/353,841,020.60 = 138,931,547.67/x
  3. Step 3: Cross multiply
    256,406,310.09x = 353,841,020.60 × 138,931,547.67
  4. Step 4: Simplify right side
    256,406,310.09x = 49,159,680,620,395,696
  5. Step 5: Solve for x
    x = 49,159,680,620,395,696/256,406,310.09
  6. Step 6: Final answer
    x = 191,725,705.20

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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.