Finding the Fourth Proportional to 257,934,271.46, 386,829,587.19 and 85,424,536.58
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Solution
The fourth proportional to 257,934,271.46, 386,829,587.19 and 85,424,536.58 is: 128,113,019.00
Step by Step Solution
- Step 1: Write the proportion equation
257,934,271.46 : 386,829,587.19 = 85,424,536.58 : x - Step 2: Convert to fraction form
257,934,271.46/386,829,587.19 = 85,424,536.58/x - Step 3: Cross multiply
257,934,271.46x = 386,829,587.19 × 85,424,536.58 - Step 4: Simplify right side
257,934,271.46x = 33,044,738,221,138,452 - Step 5: Solve for x
x = 33,044,738,221,138,452/257,934,271.46 - Step 6: Final answer
x = 128,113,019.00
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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.