Finding the Fourth Proportional to 257,934,271.96, 386,829,587.94 and 85,424,537.08
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Solution
The fourth proportional to 257,934,271.96, 386,829,587.94 and 85,424,537.08 is: 128,113,019.75
Step by Step Solution
- Step 1: Write the proportion equation
257,934,271.96 : 386,829,587.94 = 85,424,537.08 : x - Step 2: Convert to fraction form
257,934,271.96/386,829,587.94 = 85,424,537.08/x - Step 3: Cross multiply
257,934,271.96x = 386,829,587.94 × 85,424,537.08 - Step 4: Simplify right side
257,934,271.96x = 33,044,738,478,621,648 - Step 5: Solve for x
x = 33,044,738,478,621,648/257,934,271.96 - Step 6: Final answer
x = 128,113,019.75
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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.